Speed up compiling with new computer, many cores or higer frequency

Ram is usually the largest limiting factor. Make sure you have more than the minimum requirement specified for your device (for example, stratix V devices need a min of 12 GB ). Using virtual ram will slow the process to a crawl.

Then after that, you'll be better off with higher clock speed. While quartus is multi threaded and will use all your cores at some point, for the large amount of processing time, it will only use a single thread.